The Shield is a recurring power-up in the Sonic Boom video games which first appeared in Sonic Boom: Rise of Lyric and Sonic Boom: Shattered Crystal. A defensive power-up, it envelopes the playable character in a spherical barrier which protects the wearer from taking damage, but only once.
The Shield has the ability to negate damage taken from enemies and different kinds of damage-inflicting level hazards. After receiving a damaging blow, the Shield disappears and the player usually fly slightly backwards without taking damage, meaning the player will not lose Rings or be defeated if they are hit without Rings. Shields will not protect the player from falling into bottomless pits or getting crushed however.
In most cases, the Shield can be obtained by breaking item boxes displaying the Shield's icon in the respective games. Once obtained, the Shield will usually surround the player character until it is broken or the level is completed.
The Shield's color has varied between games without explanation: Sonic Boom: Shattered Crystal has depicted it as translucent with a yellow tint while Sonic Dash 2: Sonic Boom has depicted it as green.
Sonic Boom: Rise of Lyric
In Sonic Boom: Rise of Lyric, the Shield does not appear as an individual power-up. Instead, it is created via the "Bubble Shield" Power Glyph which spawns one Shield whenever the player's Ring count hits zero.
Sonic Boom: Shattered Crystal
In Sonic Boom: Shattered Crystal, the Shields are translucent with a yellow tint. They can be found within the adventure levels in spherical silver and red item boxes that showcase an empty shield on the front which break when touched.
By unlocking Blueprints, the player can obtain upgrades for the Shield. The "Shield Award" upgrade lets the player automatically obtain a Shield upon reaching the first Checkpoint, and the "Map Accelerator 3.0" upgrade will highlight Shield locations on the Adventure Map.
Sonic Dash 2: Sonic Boom
In Sonic Dash 2: Sonic Boom, the Shields are transparent green bubbles. In gameplay, they can be found inside glass capsules with a red cap on the top and bottom and a green kite shield icon on the inside. These capsules break upon touch. However, the Shield will disappear after a certain period of time. Certain Sprites allow the player to manipulate them however; Aegis extents the Shield's duration and Targa makes the Shield appear more often.
- The Shield is based on the power-up of the same name from the main Sonic series.